#cat /sys/devices/pnp0/00:05/rtc/rtc0/power/autosuspend_delay_ms cat: /sys/devices/pnp0/00:05/rtc/rtc0/power/autosuspend_delay_ms: Input/output error
1)boot with preempt-rt kernel 2)#cat /sys/devices/pnp0/00:05/rtc/rtc0/power/autosuspend_delay_ms